Relaxational dynamics of polar nanodomains in Sr1 - xCaxTiO3, x = 0.002

W. Kleemann, A. Albertini, Ralph Chamberlin, J. G. Bednorz

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The dielectric permittivity of Sr1 - xCaxTiO3, x - 0.002, measured at frequencies 10-3 ≤ f ≤ 107 Hz and temperatures 1.5 ≤ T ≤ 15 K, exhibits enhanced loss, ε″(f), on its low-f slope. This contrasts with conventional glassy dynamics and is attributed to dynamic heterogeneity involving thermally activated relaxation of dynamically coupled mesoscopic domains. Crossover into non-activated dynamics occurs at very low f as corroborated by temporal relaxation studies of the field-induced polarization P. Below T ≈ 3 K athermal quantum tunneling starts to dominate both ε″ (f) and P(t).

Original languageEnglish (US)
Pages (from-to)145-150
Number of pages6
JournalEurophysics Letters
Volume37
Issue number2
DOIs
StatePublished - Jan 10 1997

Fingerprint

crossovers
permittivity
slopes
polarization
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Relaxational dynamics of polar nanodomains in Sr1 - xCaxTiO3, x = 0.002. / Kleemann, W.; Albertini, A.; Chamberlin, Ralph; Bednorz, J. G.

In: Europhysics Letters, Vol. 37, No. 2, 10.01.1997, p. 145-150.

Research output: Contribution to journalArticle

Kleemann, W. ; Albertini, A. ; Chamberlin, Ralph ; Bednorz, J. G. / Relaxational dynamics of polar nanodomains in Sr1 - xCaxTiO3, x = 0.002. In: Europhysics Letters. 1997 ; Vol. 37, No. 2. pp. 145-150.
@article{382834f391a9463d896781099f45cba2,
title = "Relaxational dynamics of polar nanodomains in Sr1 - xCaxTiO3, x = 0.002",
abstract = "The dielectric permittivity of Sr1 - xCaxTiO3, x - 0.002, measured at frequencies 10-3 ≤ f ≤ 107 Hz and temperatures 1.5 ≤ T ≤ 15 K, exhibits enhanced loss, ε″(f), on its low-f slope. This contrasts with conventional glassy dynamics and is attributed to dynamic heterogeneity involving thermally activated relaxation of dynamically coupled mesoscopic domains. Crossover into non-activated dynamics occurs at very low f as corroborated by temporal relaxation studies of the field-induced polarization P. Below T ≈ 3 K athermal quantum tunneling starts to dominate both ε″ (f) and P(t).",
author = "W. Kleemann and A. Albertini and Ralph Chamberlin and Bednorz, {J. G.}",
year = "1997",
month = "1",
day = "10",
doi = "10.1209/epl/i1997-00124-7",
language = "English (US)",
volume = "37",
pages = "145--150",
journal = "EPL",
issn = "0295-5075",
publisher = "IOP Publishing Ltd.",
number = "2",

}

TY - JOUR

T1 - Relaxational dynamics of polar nanodomains in Sr1 - xCaxTiO3, x = 0.002

AU - Kleemann, W.

AU - Albertini, A.

AU - Chamberlin, Ralph

AU - Bednorz, J. G.

PY - 1997/1/10

Y1 - 1997/1/10

N2 - The dielectric permittivity of Sr1 - xCaxTiO3, x - 0.002, measured at frequencies 10-3 ≤ f ≤ 107 Hz and temperatures 1.5 ≤ T ≤ 15 K, exhibits enhanced loss, ε″(f), on its low-f slope. This contrasts with conventional glassy dynamics and is attributed to dynamic heterogeneity involving thermally activated relaxation of dynamically coupled mesoscopic domains. Crossover into non-activated dynamics occurs at very low f as corroborated by temporal relaxation studies of the field-induced polarization P. Below T ≈ 3 K athermal quantum tunneling starts to dominate both ε″ (f) and P(t).

AB - The dielectric permittivity of Sr1 - xCaxTiO3, x - 0.002, measured at frequencies 10-3 ≤ f ≤ 107 Hz and temperatures 1.5 ≤ T ≤ 15 K, exhibits enhanced loss, ε″(f), on its low-f slope. This contrasts with conventional glassy dynamics and is attributed to dynamic heterogeneity involving thermally activated relaxation of dynamically coupled mesoscopic domains. Crossover into non-activated dynamics occurs at very low f as corroborated by temporal relaxation studies of the field-induced polarization P. Below T ≈ 3 K athermal quantum tunneling starts to dominate both ε″ (f) and P(t).

UR - http://www.scopus.com/inward/record.url?scp=0031561699&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031561699&partnerID=8YFLogxK

U2 - 10.1209/epl/i1997-00124-7

DO - 10.1209/epl/i1997-00124-7

M3 - Article

AN - SCOPUS:0031561699

VL - 37

SP - 145

EP - 150

JO - EPL

JF - EPL

SN - 0295-5075

IS - 2

ER -